Steam-turbine



M. A. ROSS. STEAM TURBINE.

APPLICATION FILED AUG.I5, l9l8.

Patented July 1,

. that parts would be worn and MARK A. BOSS, OF CHICAGO, ILLINOIS.

STEAM TURBINE;

Specification of Letters Patent.

Application filed August 15, 1918. Serial No. 250,004.

To all whom it may concern:

Be it known that I, Mean A. Boss, citizen of the United States, reslding at Chicago, in the county of Cook and State of Illinois,

have invented a certain new and useful provement in Steam-Turbines, of which the following is a full, clear, concise, and exact descriptlon.

My invention relates to lubricating struc- I tures and, in one of its characteristics, particularly to such a structure embodied in a steam turbine, another feature of the inven-.

tion not being limited to such use.

The invention has for one of its objects.

the provision of means for preventing Water of condensation in a turbine from accumulating in the container employed for holding oil or other liquid lubricant that is autoturbine shaft.

cumulated to such an extent as to empty the container of the lubricant with the result would get out of alinement and disarrange the normal interrelation of various turbine parts. The invention has for another of its objects the improved assembly of a loose lubricant distributing ring with a lubricant container and a bearing to be supplied with lubricant from said container by said ring.

I will explain my invention more fullvby reference to the accompanying drawmg showing the preferred embodiment thereof and in which Figure 1 is a view in longitudinal section showing a portion of a steam turbine embracing both characteristics of my invention; Fig. 2 is a sectional view on line 22 of Fig. 1 and Fig. 3 is a sectional view on line 33 of Fig. 1.

Like parts are indicated by similar characters of reference throughout the dilierent figures.

The turbine illustrated is one that is employed for driving an electric current generator that supplies a locomotive electric hea'd light with current, the generator armature being upon the turbine shaft 1. This shaft is propelled by means of steam passing through the governor valve 2 and the steam nozzle 3 to the blades 4 carried upon the periphery of the turbine wheel 5 which is the shaft. A housing wheel, and other parts This housing is the portion 6 and the steam 1 and has a pocket 1 which causes the ring to creep,

nozzle and being in steam tight assembly Patented July 1, 1919. I

with the shaft by means of the stufiing box 7. The other housing portion 8 carries the governor bracket 9' which supports the valve controlling governor bell crank 10 and the governor springll, in accordance with common practice. This housing portion 8 is integrally formed with a receptacle or stuffiirg box 12 having a threaded bore coaxial with and surrounding the shaft and which contains packing 13. The inner end wall of this receptacle is in close engagement with the shaft to limit the passage-of exhaust steam to the packing 13 whose purpose is to prevent the further passage of steam. A packing nut 14 enters the bore of the packing receptacle l2 and may be inwardly adjusted from time to time to stop the packing from leaking. A spring 15 holds the nut in its adjustment. The shaft 1 projects A through the stufling box 12, being supported oil or lubricant container from which lubricant is supplied to the bearing, whereby the lubricant may be retained in the bearing and the lubricant container without danger of having this lubricant expelled by the water of condensation. The cap 17 carries a cylindrical sleeve 19 whose bore is coaxial with the shaft and contains the bearing 16 with which it is in fluid tight engagement. The webbing 20 is an integral portion of the cap 17 and is integrally formed with and supports the sleeve 19. The cap extendsbeyond the webbing to or chamber 18 which surrounds the bearing beneath the bearing to constitute a form of lubricant reservoir. This container may be closed at the outer end of the shaft by a detachable cover 21. The bearing'16 and its supporting sleeve 19 are provided in their top portions with communicating slots 21', 22 in which a lubricant feeding ring 23 is loosely disposed. This ring bears at its top portion upon the shaft and as the ring creeps it transfers lubricant into which it dips from the container to the shaft. A guard 24 overlies the slot 2122 to prevent the ring from leaving said slot. This guard is preferably in the form of a bolt passing form the lubricant container through the cap and having its inner end in guarding position. In assembling the parts the ring is slipped over the bearing 16 and its supporting sleeve 19, there being sufficient clearance between the sleeve and the lubricant container for this purpose. The bolt 24 being then sufliciently withdrawn, the ring is placed in the slot 21-22 whereafter the bolt is adjusted to guarding position. All of these parts may be assembled and adjusted while the shaft is removed, the shaft being readily' insertible thereafter in its bearing.

The web 20 is imperforate except for a lubricant return passage 25 leading from the inner end of the bearing 16 back to the container 18. The slcevel19- has an annular groove 26 at its inner end and in communication with the return passage 25, this groove catching the lubricant passing from the inner end-of thebearing and directing it to said. passage from whence it flows back to the container. The lubricant passing from the outer end of the bearing passes directly back to the lubricant container. By this arrangement the lubricant may be used over and over again The inner end of the sleeve 19 is sealed or brought into fluid tight relation with the shaft preferably by means of .hub or central portion is snugly surrounded by the sleeve. A clamping bolt 28 clam s thebafiie upon the shaft to bring the ba e into fluid tight assembly with the shaft. The bafile cooperates with the sleeve 19 and the webbing 20 to prevent the passageof fluid from either side of the webbing to the other. This construction not only prevents the wasteful passage of lubricant from the cona radially split bafiie plate or disk 27 whose portance in case the packing nut 14 is not maintained in proper adjustment to prevent leakage through the packing 13. The battle may have ribs or vanes 29 further to directwater away from the container '18. Any water of condensation that occurs in the in ner chamber of the cap 17 finds exit through the opening 30.

While I have herein shown and particularly described the preferred embodiment of my invention, I do not wish to be limited to the precise details of constructionshown as changes may readily be made without departing from the spirit of my invention, but having thus described my invention I claim as new and desire to secure by Letters Patent the following L The combination with a substantially closed lubricant container; of a sleeve therein; a bearing in said sleeve; a loose lubricant feeding ring upon the shaft and dipping into the lubricant in the container, there being a slot formed in the upper portions of said sleeve and bearing in which the ring is disposed to enable it to engage the shaft, there also being clearance between the container and sleeve to permit the ring to be moved along the sleeve'in the process of assembly;-

anda guard positioned to engage the ring and prevent it from leaving said slot.

, 2; The combination with a substantially closed lubricant container; of a sleeve therein; a bearing in said sleeve; a loose lubricant feeding ring upon the shaft and dipping into the lubricant in the container; therebeing a slot formed in the upper portions of said sleeve and bearing in which the rin is disposed to enable it to engage the sha there also being clearance between the container and sleeve to permit the ring to be moved along the sleeve in the process of assembly; and a guarding bolt adjustably carried by the container above said slot to maintain the ring in place- I In witness whereof, I hereunto subscribe my name this 12th day of August, A. D.

MARK A, ROSS. 

